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beaver dams may buffer against temperatures that threaten sensitive species




before and after beaver colonization. credit: weber et al., 2017both natural and artificial beaver dams may alter stream temperatures which may benefit temperature-sensitive salmonid species, according to a study published may 10, 2017 in the open-access journal plos one by nicholas weber from eco-l...



fish should figure in to fate of nation's aging dams




as nearly 75 percent of the nation's largest dams approach the high maintenance years, safety and economics figure large in decisions to fix or replace. a recent study by michigan state university (msu) researchers makes a case to consider how those dams affect the streams and fish that live in them.



beavers do dam good work cleaning water, research reveals




beavers could help clean up polluted rivers and stem the loss of valuable soils from farms, new research shows.the study, undertaken by scientists at the university of exeter using a captive beaver trial run by the devon wildlife trust, has demonstrated the significant impact the animals have had on...



fish should figure in to fate of nation's aging dams




image: this is a distribution of the 49,468 large dams for the conterminous usa. view more credit: us epa, 2006as nearly 75 percent of the nation's largest dams approach the high maintenance years, safety and economics figure large in decisions to fix or replace. a recent study by michigan state u...



all happy to build dams, but none interested in sending water to farms: gadkari




from ministers to bureaucrats, everyone is "very happy" to construct large dams but few are interested in ensuring that water reaches farms, union minister nitin gadkari said on tuesday as he pitched for focusing on increased irrigation.gadkari suggested that instead of going in for large dams, the ...



small hydroelectric dams increase globally with little research, regulations




hydropower dams may conjure images of the massive grand coulee dam in washington state or the three gorges dam in hubei, china—the world's largest electricity-generating facility.



small hydroelectric dams increase globally with little research, regulations




hydropower dams may conjure images of the massive grand coulee dam in washington state or the three gorges dam in hubei, china -- the world's largest electricity-generating facility. but not all dams are the stuff of documentaries. tens of thousands of smaller hydroelectric dams exist around the wor...



hydropower dams can be managed without an all-or-nothing choice between energy a




nearly 100 hydropower dams are planned for construction along tributaries off the mekong river's 2,700-mile stretch. the river, one of the world's largest, flows through burma, china, vietnam, laos, thailand and cambodia. it is an economic engine for fishermen and a food source for millions of peopl...



study finds big savings in removing dams over repairs




a new study by portland state university researchers finds billions of dollars could be saved if the nation's aging dams are removed rather than repaired, but also suggests that better data and analysis is needed on the factors driving dam-removal efforts.the study, published online in may in the jo...



this curious animal grew larger over time—but its brain didn't quite keep up




the mountain beaver (not to be confused with the north american beaver) is native to the northwestern u.s. and southern british columbia, particularly the cascade mountains. credit: john m. regan - northwest wildlife onlinenew u of t scarborough research has found that the ancestor of the modern day...



study finds big savings in removing dams over repairs




a new study by portland state university researchers finds billions of dollars could be saved if the nation's aging dams are removed rather than repaired, but also suggests that better data and analysis is needed on the factors driving dam-removal efforts.



are elevated levels of mercury in the american dipper due to run-of-river dams?




a study published in environmental toxicology and chemistry used american dippers to determine if run-of-river (ror) dams altered food webs and mercury levels at 13 stream sites in british columbia.



dams drive risk of fish extinction in the u.s.




dams drive local extinction risk of native fish in the southern united states, according to a study by florida international university. 



oroville crisis drives harder look at aging us dams




in this feb. 9, 2017 file photo, water flows through a break in the wall of the oroville dam spillway in oroville, calif. one year after the closest thing to disaster at a major u.s. dam in a generation, federal dam regulators say they are looking hard at how they overlooked the built-in weaknesses ...



amazonia's future will be jeopardized by dams




image: this map of south america shows the watershed of the amazon river, the largest river system on earth. the watershed, which stretches from the eastern slopes of the andes to... view more credit: earth observatory, nasabuilding the hundreds of hydroelectric dams proposed for the amazon river ...



hydroelectric dams may jeopardize the amazon's future




hundreds of built and proposed hydroelectric dams may significantly harm life in and around the amazon by trapping the flow of rich nutrients and modifying the climate from central america to the gulf of mexico. these findings, published in nature, emerge from a multidisciplinary, international coll...



dams drive risk of fish extinction in the u.s.




credit: florida international universitydams drive local extinction risk of native fish in the southern united states, according to a study by florida international university.  the high number of dams built close to each other in the southeast significantly limits where fish can move throughout t...



potential impacts of planned andean amazon dams outweigh benefits, scientists sa




new york - august 23, 2017 - an international team of scientists investigating the effects of six planned or potential andean dams on the amazon river system has found that major negative ecological impacts can be expected both above the dams and throughout the lowland floodplains and the amazon del...



new fiber-based sensor could quickly detect structural problems in bridges and d




today, there is great interest in using distributed sensors to continually monitor the structural health of large structures such as dams or bridges. with 1 million sensing points, a newly developed fiber optic distributed sensor could offer significantly faster detection of structural problems than...



western ridge - studio glass by brenden scott french at beaver galleries is good




western ridge – studio glass by brenden scott french. beaver galleries. until august 6.brenden scott french, now based in adelaide, is well known in canberra. after obtaining his initial degree at the sydney college of the arts, his honours year was completed at the canberra school of art in 2003...



study suggests hydroelectric dams causing greater impact on amazon basin than th




a river’s natural flow regime acts as a master control on numerous human and ecological systems. credit: elizabeth andersona team of researchers from the u.s. and multiple countries in south america has found that hydroelectric dams built in the amazon river basin, which were built to meet the gro...



this curious animal grew larger over time -- but its brain didn't quite keep up




image: ornella bertrand's research on the brain evolution of mammals involves developing 3d models of an endocast, which is the imprint of the brain inside the cranium. view more credit: university of toronto scarborougha new u of t scarborough study has found that the ancestor of the modern day m...



dams are major driver of global environmental change




the roman dam at cornalvo in spain has been in use for almost two millennia. credit: wikipedia/ cc by-sa 2.0water reservoirs created by damming rivers could have significant impacts on the world's carbon cycle and climate system that aren't being accounted for, a new study concludes. the study, cond...



shots fired at penn state beaver campus, officials say




(monaca, pa.) — officials say shots have been fired near a dining hall at a penn state satellite campus near pittsburgh and a coroner is at the scene.penn state beaver issued an alert just before 4 p.m. wednesday that shots were fired, adding that the situation is contained and they say there is ...



presstv-afghanistan says to construct 20 more dams




afghanistan says it plans to construct 20 more dams in face of warnings that the move could undermine life in some of its neighboring countries, specifically iran. afghanistan’s energy and water ministry in a statement said the new dams would be large and medium-sized, and that they would be most...